Jet hot coatings on exhaust pipes? I would like opinions. I’ve had my headers coated with Jet hot coatings and so has my younger son. They are awesome! My oldest son wanted his exhaust manifolds and crossover pipe jet coated. 1987 T-Type. They said it gets too hot and it would have to be done at their special plant which involves a lot more cost. Somehow we don’t really believe. Why should exhaust manifolds and the crossover pipe get more hot than a regular car. It’s before the turbo charger. We are not talking the down pipe. I would like opinions, or anyone that has specific knowledge. We don’t understand...
At 16# of boost, you're running twice as much exhaust gasses through the exhaust. It's gonna get hotter. Hook up an EGT guage, it could be as high as about 1800* F pre-turbo, depending on tune.
Thank you FJM568! I am awaiting all in any opinions. I’m sure there is a reason why it probably gets hotter, but I just don’t understand. I’ll be back in one second
OK, I’m back. I had to look at your thread, or what you posted. I believe you said 1800°F. They said their normal coating was good to 2500°, maybe? I’ll have to look back at my notes. It’s just interesting that The exhaust pushing the turbo gets that hot. They said it did. That there coating would flake off within a year.
Dano, you are funny! When I see you post stuff I read it. You apparently know what you’re talking about 99.9% of the time. Thank you sir!
Normal cruising you may see 800-900*F. But WOT it could get to as hot as 1800*F -ish. One major advantage is keeping under hood heat down on the turbo Regals. It also helps keep the heat in the exhaust, which would help with spooling, to an extent. Worth it, if you can afford it, imo.
Wow, I just went to their site. It says up to 1250°F for their regular Coating. Bummer! I still don’t understand why manifolds on a turbo car get that hot just pushing the turbo?
Gasses compressed increase heat. (that's how diesels fire on compression) You also are backing up the gasses so greater delta than gasses flowing with less restriction. And the added power made by boost equals more heat. It all adds up.
Heck my 464 sees 1000*f temps just lightly cruising in the pits to the lanes at a mere 1500 rpms in 2nd. I see 1400 at the top of the 1320. And it has no boost.
I dont have mine coated.....but I would think a turbo motor would see higher temps than I'm seeing. I know it all has to due with fuel type, amount, and timing, but 1000*f comes up pretty quickly. But I wonder if they are talk exhaust gas temps, or actual pipe temps....they will be drastically different
Exactly Ben that's gas temps,...that are moving at a high rate of speed thru the pipe,....the pipe itself doesn't see that temp
